While the new FAST EZ-EFI 2.0 fuel injection system makes life easy for street enthusiasts, drag racers can also take advantage of its self-tuning capabilities.
“Bracket racers and anyone who needs consistency can utilize the EZ-EFI system,” says David Page of FAST. “The system will take into account atmospheric conditions. The owner doesn’t have to make changes based on the weather.”
The EZ-EFI is based around a unique throttle body with fully integrated sensors, an advanced ECU that can work with different fuels and a full-color touchscreen programmer.
“The throttle body will work with engines up to 1,200 horsepower,” says Page.
The key for racers, especially those with big engines and aggressive cams, is to locate the O2 sensor at least 12 inches from the open end of the header collector.
“A big cam can cause reversion,” explains Page. “If the O2 sensor is too close to the outlet, there can be a false lean-condition reading.”
The EZ-EFI throttle body features eight injectors to provide enough power, but engineers also discovered that eight injectors helped even air-fuel delivery in 4-barrel manifolds. The die-cast throttle body also has integrated fuel rails and needle bearings instead of bushings on the throttle shafts.
The ECU will respond to changes in fuel, including E98, E85 and E15, and it will work with most ignition systems. Precision ignition control requires a FAST distributor or crank trigger. A new wiring harness requires few connections for easy installation, and the new casing includes diagnostic LED lights.
“This system will keep the engine in tune, regardless of atmospheric conditions,” says Page. “A carburetor is static in tuning unless you physically change the jets or air bleeds.”
For extreme engines, two throttle bodies can be adapted and controlled by a single ECU.